CVE-2021-43569

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Source
https://cve.org/CVERecord?id=CVE-2021-43569
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43569.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-43569
Aliases
Published
2021-11-09T22:15:07.597Z
Modified
2026-07-09T05:45:33.583544Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

The verify function in the Stark Bank .NET ECDSA library (ecdsa-dotnet) 1.3.1 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.

References

Affected packages

Git / github.com/starkbank/ecdsa-dotnet

Affected ranges

Type
GIT
Repo
https://github.com/starkbank/ecdsa-dotnet
Events
Introduced
76b1faf93152c7b0614a2e90ffb2ef51b30606a2
Last affected
76b1faf93152c7b0614a2e90ffb2ef51b30606a2
Fixed
76b1faf93152c7b0614a2e90ffb2ef51b30606a2
Database specific 
{
    "cpe": "cpe:2.3:a:starkbank:ecdsa-dotnet:1.3.2:*:*:*:*:*:*:*",
    "source": [
        "CPE_STRING",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "1.3.2"
        },
        {
            "last_affected": "1.3.2"
        }
    ]
}

Affected versions

1.*
1.3.2
v1.*
v1.3.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43569.json"